CHECK: braces {} should be used on all arms of this statement
#181: FILE: tools/testing/selftests/net/msg_zerocopy.c:527:
+		if (zerocopied == -1)
[...]
+		else if (zerocopied != zerocopy) {
[...]

WARNING: line length of 84 exceeds 80 columns
#208: FILE: tools/testing/selftests/net/msg_zerocopy.c:622:
+			       sizeof(struct zc_info_elem) * cfg_notification_limit;

WARNING: line length of 91 exceeds 80 columns
#279: FILE: tools/testing/selftests/net/msg_zerocopy.c:878:
+			error(1, 0, "PF_RDS does not support MSG_ZEROCOPY_NOTIFY_SENDMSG");

total: 0 errors, 2 warnings, 1 checks, 212 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 7161b7129793 ("selftests: add MSG_ZEROCOPY msg_control notification test") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 2 warnings, 1 checks, 212 lines checked